# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=401

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 402

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## [Sanity Check for my Node Red project architecture](https://discourse.nodered.org/t/sanity-check-for-my-node-red-project-architecture/60095)

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**Author:** [@abehil](https://discourse.nodered.org/u/abehil)\
**Replies:** 8\
**Last updated:** [23 March 2022 03:02 UTC](https://discourse.nodered.org/t/sanity-check-for-my-node-red-project-architecture/60095 "2022-03-23T03:02:18Z")

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I'm trying to figure out if I can create flows in Node Red to be deployed to Arduino Mega which has 16 relays connected.. Then have a remote Wemos D1 Mini send commands to the Mega to invoke individual flows when needed…

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## [Alternative of current ui nodes in the FlexDash dashboard](https://discourse.nodered.org/t/alternative-of-current-ui-nodes-in-the-flexdash-dashboard/58768)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 83\
**Last updated:** [22 March 2022 23:16 UTC](https://discourse.nodered.org/t/alternative-of-current-ui-nodes-in-the-flexdash-dashboard/58768 "2022-03-22T23:16:07Z")

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Hi folks, I would like to discuss here how we can assist @tve to build an alternative for the current AngularJs UI nodes in his FlexDash dashboard. For people that don't like the concept of UI nodes, please just ignore…

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## [Extract msg.payload for triggering mytimeout](https://discourse.nodered.org/t/extract-msg-payload-for-triggering-mytimeout/60135)

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**Author:** [@\_mirjka](https://discourse.nodered.org/u/_mirjka)\
**Replies:** 8\
**Last updated:** [22 March 2022 19:29 UTC](https://discourse.nodered.org/t/extract-msg-payload-for-triggering-mytimeout/60135 "2022-03-22T19:29:37Z")

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Hi, I trigger a "mytimeout" node with a Thingboard dashboard and a certain timeout value. The syntax is straight forward and I get it via MQTT exaclty like it has to be. { "timeout": number, } The start mqtt messag…

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## [Node Red crashed - why?](https://discourse.nodered.org/t/node-red-crashed-why/59500)

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**Author:** [@Flixm](https://discourse.nodered.org/u/Flixm)\
**Replies:** 11\
**Last updated:** [22 March 2022 18:30 UTC](https://discourse.nodered.org/t/node-red-crashed-why/59500 "2022-03-22T18:30:44Z")

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Hi, the last time neary every day my Node Red restart by itself and i could not find out why. I worked with a few charts the last time. Maybe that could be a reason ? Attached the LOG of the "restart": 7 Mar 17:01:39…

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## [Connection failure](https://discourse.nodered.org/t/connection-failure/59846)

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**Author:** [@SHAMOO](https://discourse.nodered.org/u/SHAMOO)\
**Replies:** 7\
**Last updated:** [22 March 2022 18:26 UTC](https://discourse.nodered.org/t/connection-failure/59846 "2022-03-22T18:26:05Z")

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Hi guys, Feeling dumb this morning and confused by the time change. Got to work and my node-red refuses to connect, not sure why. I've started it back up the way I normally do, in fact it usually fires right up when I c…

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## [How can i calculate execution time in node red?](https://discourse.nodered.org/t/how-can-i-calculate-execution-time-in-node-red/60208)

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**Author:** [@Fathi2022](https://discourse.nodered.org/u/Fathi2022)\
**Replies:** 2\
**Last updated:** [22 March 2022 18:25 UTC](https://discourse.nodered.org/t/how-can-i-calculate-execution-time-in-node-red/60208 "2022-03-22T18:25:57Z")

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calculate the program speed (start and end )

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## [How can i read stream xml file using Node red](https://discourse.nodered.org/t/how-can-i-read-stream-xml-file-using-node-red/60146)

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**Author:** [@Fathi2022](https://discourse.nodered.org/u/Fathi2022)\
**Replies:** 5\
**Last updated:** [22 March 2022 16:34 UTC](https://discourse.nodered.org/t/how-can-i-read-stream-xml-file-using-node-red/60146 "2022-03-22T16:34:17Z")

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Node-red to read XML file

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## [Password problem](https://discourse.nodered.org/t/password-problem/17572)

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**Author:** [@OZ1SEJ](https://discourse.nodered.org/u/OZ1SEJ)\
**Replies:** 10\
**Last updated:** [22 March 2022 15:07 UTC](https://discourse.nodered.org/t/password-problem/17572 "2022-03-22T15:07:03Z")

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I just installed nodered on a fresh Raspberry Pi. During installation, I was asked to enter a password - twice. I know what I entered, I use the same password for a number of applications (I know I shouldn't) but now whe…

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## [Node Red dead after infinite recursive loop](https://discourse.nodered.org/t/node-red-dead-after-infinite-recursive-loop/60197)

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**Author:** [@Tassidar](https://discourse.nodered.org/u/Tassidar)\
**Replies:** 4\
**Last updated:** [22 March 2022 14:48 UTC](https://discourse.nodered.org/t/node-red-dead-after-infinite-recursive-loop/60197 "2022-03-22T14:48:42Z")

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Hi Everyone, this is my first post. I've been using Node Red for a while and I'm quite happy with it. Since it was lots of fun and no real problems, I didn't need to ask for help... until now :stuck\_out\_tongue: Today …

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## [MQTT to MYSQL help is needed](https://discourse.nodered.org/t/mqtt-to-mysql-help-is-needed/60190)

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**Author:** [@Evos](https://discourse.nodered.org/u/Evos)\
**Replies:** 3\
**Last updated:** [22 March 2022 13:56 UTC](https://discourse.nodered.org/t/mqtt-to-mysql-help-is-needed/60190 "2022-03-22T13:56:58Z")

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Hi Everyone, I am new to Node-Red but have been running some home automation via HA for a while. With a new project I have a electricity monitor that pass's out 6 messages via MQTT and I would like to write these into …

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## [Need help in sending image attachments on email](https://discourse.nodered.org/t/need-help-in-sending-image-attachments-on-email/58226)

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**Author:** [@XhanceHd](https://discourse.nodered.org/u/XhanceHd)\
**Replies:** 11\
**Last updated:** [22 March 2022 13:53 UTC](https://discourse.nodered.org/t/need-help-in-sending-image-attachments-on-email/58226 "2022-03-22T13:53:01Z")

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I need help on sending image attachment on email. So far i can only send 1 image. I tried making an array of buffered 2 image as content with their file name on msg.attachments and shows only 1 image on my inbox. here…

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## [Modbus-client enable/disable](https://discourse.nodered.org/t/modbus-client-enable-disable/60194)

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**Author:** [@Aivaras1](https://discourse.nodered.org/u/Aivaras1)\
**Replies:** 2\
**Last updated:** [22 March 2022 13:49 UTC](https://discourse.nodered.org/t/modbus-client-enable-disable/60194 "2022-03-22T13:49:01Z")

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Hello, Is it possible to disable a modbus-client using a function or a command ? I am using this library - node-red-contrib-modbus (node) - Node-RED Best Regards Aivaras

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## [How to read xml external file](https://discourse.nodered.org/t/how-to-read-xml-external-file/12473)

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**Author:** [@sanserg](https://discourse.nodered.org/u/sanserg)\
**Replies:** 10\
**Last updated:** [22 March 2022 13:39 UTC](https://discourse.nodered.org/t/how-to-read-xml-external-file/12473 "2022-03-22T13:39:22Z")

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Hi all, I do have a xml file and I wish to read it in a node-red flow to convert the data in payload flow. does anybody has any sample about how to do it? thanks

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## [Node-red-contrib-fritz and FritzBox 7490: Error on using service / action](https://discourse.nodered.org/t/node-red-contrib-fritz-and-fritzbox-7490-error-on-using-service-action/60150)

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**Author:** [@wachovius](https://discourse.nodered.org/u/wachovius)\
**Replies:** 1\
**Last updated:** [22 March 2022 13:38 UTC](https://discourse.nodered.org/t/node-red-contrib-fritz-and-fritzbox-7490-error-on-using-service-action/60150 "2022-03-22T13:38:41Z")

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I need your help. Using node-red-contrib-fritz NodeRed 2.2.2, FB 7490 with FritzOS 07.29. Trying to make a call "urn:dslforum-org:service:X\_VoIP:1" -\> "X\_AVM-DE\_DialNumber". While this works well from an ESP8266 unit (so…

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## [How can I get the value and not override it again when starting the timer?](https://discourse.nodered.org/t/how-can-i-get-the-value-and-not-override-it-again-when-starting-the-timer/60174)

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**Author:** [@buttertoast](https://discourse.nodered.org/u/buttertoast)\
**Replies:** 11\
**Last updated:** [22 March 2022 09:28 UTC](https://discourse.nodered.org/t/how-can-i-get-the-value-and-not-override-it-again-when-starting-the-timer/60174 "2022-03-22T09:28:57Z")

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Hey! I may or may not have a rather simple question which I'm a bit stuck on though. I want to achive a counter, which starts at 5, counts down, if it gets to 0 starts at 5 again and so on. Now the problem I've is tha…

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## [Can Node-red be installed on amazon fire tablet?](https://discourse.nodered.org/t/can-node-red-be-installed-on-amazon-fire-tablet/60125)

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**Author:** [@EnergIAM](https://discourse.nodered.org/u/EnergIAM)\
**Replies:** 2\
**Last updated:** [22 March 2022 11:23 UTC](https://discourse.nodered.org/t/can-node-red-be-installed-on-amazon-fire-tablet/60125 "2022-03-22T11:23:44Z")

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Hello everyone, I tried to install on Fire OS as if it were Android but I didn't get it, can it be done?

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## [Protobuf encoder returns empty buffer payload (2)](https://discourse.nodered.org/t/protobuf-encoder-returns-empty-buffer-payload-2/60183)

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**Author:** [@Highlander](https://discourse.nodered.org/u/Highlander)\
**Replies:** 6\
**Last updated:** [22 March 2022 10:20 UTC](https://discourse.nodered.org/t/protobuf-encoder-returns-empty-buffer-payload-2/60183 "2022-03-22T10:20:27Z")

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I still fail to get the encoder to work. I have read the first post. Still no joy. the solution presented is msg.payload={payload:{....}} I still get payload:buffer\[0\] in the debug node

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## [Something wrong with buffer-array node?](https://discourse.nodered.org/t/something-wrong-with-buffer-array-node/58938)

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**Author:** [@Marcos](https://discourse.nodered.org/u/Marcos)\
**Replies:** 2\
**Last updated:** [22 March 2022 08:41 UTC](https://discourse.nodered.org/t/something-wrong-with-buffer-array-node/58938 "2022-03-22T08:41:59Z")

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Dear All Thanks for your attention. I’ve spent all this day trying to understand what is wrong with the buffer-array node. It is supposed that this node, receiving any payload in input, will output an array payload of a…

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## [nodesExcludes in portable node-red](https://discourse.nodered.org/t/nodesexcludes-in-portable-node-red/59967)

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**Author:** [@mehmetul](https://discourse.nodered.org/u/mehmetul)\
**Replies:** 5\
**Last updated:** [22 March 2022 08:20 UTC](https://discourse.nodered.org/t/nodesexcludes-in-portable-node-red/59967 "2022-03-22T08:20:08Z")

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Hello, As I read there is a function that named nodesExcludes in settings.js or passing into as parameter in 3rd party portable edition of the node-red. So I would like to disable all basic nodes like as common,functio…

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## [How to add payload to a posted MQTT topic?](https://discourse.nodered.org/t/how-to-add-payload-to-a-posted-mqtt-topic/60143)

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**Author:** [@muharremsari](https://discourse.nodered.org/u/muharremsari)\
**Replies:** 12\
**Last updated:** [22 March 2022 07:24 UTC](https://discourse.nodered.org/t/how-to-add-payload-to-a-posted-mqtt-topic/60143 "2022-03-22T07:24:53Z")

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I have a float OPCDA signal from PLC I want add payload to a posted MQTT topic Regards

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## [Asking again about options with this display](https://discourse.nodered.org/t/asking-again-about-options-with-this-display/57226)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 14\
**Last updated:** [22 March 2022 01:19 UTC](https://discourse.nodered.org/t/asking-again-about-options-with-this-display/57226 "2022-03-22T01:19:39Z")

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I have one of these displays: It has 3 kinds of comms options. I2C SPI and another one... (What ever) I sort of have it working, but it isn't perfect. :frowning: After more digging I have been told of this: ht…

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## [Where to find httpStatic: '/home/nol/node-red-static/' on my computer?](https://discourse.nodered.org/t/where-to-find-httpstatic-home-nol-node-red-static-on-my-computer/60153)

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**Author:** [@oliver](https://discourse.nodered.org/u/oliver)\
**Replies:** 22\
**Last updated:** [21 March 2022 21:29 UTC](https://discourse.nodered.org/t/where-to-find-httpstatic-home-nol-node-red-static-on-my-computer/60153 "2022-03-21T21:29:12Z")

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Hi I want to use custom icons on the node-red worldmap. In another post Is there is anyway to use Custom Icon in Worldmap node? - #5 by Zak I read you can put them in a node-red-static map. When I uncomment httpStatic…

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## [Control light from Google Home with Node RED](https://discourse.nodered.org/t/control-light-from-google-home-with-node-red/60053)

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**Author:** [@DeWoAlliSeged7](https://discourse.nodered.org/u/DeWoAlliSeged7)\
**Replies:** 11\
**Last updated:** [21 March 2022 20:52 UTC](https://discourse.nodered.org/t/control-light-from-google-home-with-node-red/60053 "2022-03-21T20:52:49Z")

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Hello I am new to the party... My question is : Can i control a Light with Node RED which is connected in the Google Home app ? I found much stuff about controlling lights in Google Home which are connected in the Nod…

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## [Temperature controls cooling control and a separate control for heating](https://discourse.nodered.org/t/temperature-controls-cooling-control-and-a-separate-control-for-heating/59431)

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**Author:** [@9toejack](https://discourse.nodered.org/u/9toejack)\
**Replies:** 35\
**Last updated:** [21 March 2022 18:29 UTC](https://discourse.nodered.org/t/temperature-controls-cooling-control-and-a-separate-control-for-heating/59431 "2022-03-21T18:29:46Z")

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ok so I am still wet behind the ears on node red but I have help and i have learned a lot. However im confused on what to do for chilling my fermenters in my brewery. i have been playing with some different ways people…

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## [How to change background image of a div based on a switch state?](https://discourse.nodered.org/t/how-to-change-background-image-of-a-div-based-on-a-switch-state/60124)

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**Author:** [@ayub\_anwar](https://discourse.nodered.org/u/ayub_anwar)\
**Replies:** 4\
**Last updated:** [21 March 2022 15:53 UTC](https://discourse.nodered.org/t/how-to-change-background-image-of-a-div-based-on-a-switch-state/60124 "2022-03-21T15:53:33Z")

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Hello every one, is there any way to change background image of a div element based on a variable (like a switch state)? I want to use this technique to show states of devices on a Scada project, so i really appreciate…

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## [Saving a CSV file on another Computer using Node Red](https://discourse.nodered.org/t/saving-a-csv-file-on-another-computer-using-node-red/60157)

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**Author:** [@shane.gillette](https://discourse.nodered.org/u/shane.gillette)\
**Replies:** 5\
**Last updated:** [21 March 2022 15:53 UTC](https://discourse.nodered.org/t/saving-a-csv-file-on-another-computer-using-node-red/60157 "2022-03-21T15:53:07Z")

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Hello, I want to preface this by saying I am a beginner on anything programming related or even using Node Red, so I am sorry in advance. I have a project that I am working on where I am measuring data from sensors in…

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## [How to specify NBIRTH content for a Sparkplug node](https://discourse.nodered.org/t/how-to-specify-nbirth-content-for-a-sparkplug-node/59986)

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**Author:** [@ciderglider](https://discourse.nodered.org/u/ciderglider)\
**Replies:** 13\
**Last updated:** [21 March 2022 14:35 UTC](https://discourse.nodered.org/t/how-to-specify-nbirth-content-for-a-sparkplug-node/59986 "2022-03-21T14:35:22Z")

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I have installed the node-red-contrib-sparkplug palette, and have created a sparkplug node. I have a separate Sparkplug B client that subscribes to the node I have created in node-red. When the node connects to the MQT…

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## [Formula 1 telemetry](https://discourse.nodered.org/t/formula-1-telemetry/60141)

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**Author:** [@Anth](https://discourse.nodered.org/u/Anth)\
**Replies:** 2\
**Last updated:** [21 March 2022 13:41 UTC](https://discourse.nodered.org/t/formula-1-telemetry/60141 "2022-03-21T13:41:38Z")

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Hi all, Im fairly new to Node red but finding my way. I have a home theatre with RGBW lighting and would love to be able to change the colour according to the track status of formula 1 practice, qualifying and races. …

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## [NODE RED ERROR : The server wont start so I cant view the flow, I suspect a change I performed last night](https://discourse.nodered.org/t/node-red-error-the-server-wont-start-so-i-cant-view-the-flow-i-suspect-a-change-i-performed-last-night/60021)

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**Author:** [@Evan7](https://discourse.nodered.org/u/Evan7)\
**Replies:** 50\
**Last updated:** [21 March 2022 13:31 UTC](https://discourse.nodered.org/t/node-red-error-the-server-wont-start-so-i-cant-view-the-flow-i-suspect-a-change-i-performed-last-night/60021 "2022-03-21T13:31:19Z")

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I got this error when I started up node-red today. Last night I added 2 nodes for the UI table BUT the 3rd node which I attempted to add failed to install. Anyway, I worked with what was installed and set up my dashbo…

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## [Optional admin authentication](https://discourse.nodered.org/t/optional-admin-authentication/60144)

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**Author:** [@DJDev](https://discourse.nodered.org/u/DJDev)\
**Replies:** 2\
**Last updated:** [21 March 2022 13:09 UTC](https://discourse.nodered.org/t/optional-admin-authentication/60144 "2022-03-21T13:09:08Z")

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Hi, I have a question regarding the adminauth option in the settingsfile.js. I need multiple nodered instances running. The settings.js is aside from some configurable settings fairly similar for each environment. But s…

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